mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-26 04:31:03 +00:00
7bf1094e82
Reviewed-by: Carlos O'Donell <carlos@redhat.com> Tested-by: Carlos O'Donell <carlos@redhat.com>
84 lines
2.5 KiB
C
84 lines
2.5 KiB
C
/* Set the default attributes to be used by pthread_create in the process.
|
|
Copyright (C) 2013-2020 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <errno.h>
|
|
#include <stdlib.h>
|
|
#include <pthreadP.h>
|
|
#include <string.h>
|
|
|
|
|
|
int
|
|
pthread_setattr_default_np (const pthread_attr_t *in)
|
|
{
|
|
const struct pthread_attr *real_in;
|
|
int ret;
|
|
|
|
real_in = (struct pthread_attr *) in;
|
|
|
|
/* Catch invalid values. */
|
|
int policy = real_in->schedpolicy;
|
|
ret = check_sched_policy_attr (policy);
|
|
if (ret)
|
|
return ret;
|
|
|
|
const struct sched_param *param = &real_in->schedparam;
|
|
if (param->sched_priority > 0)
|
|
{
|
|
ret = check_sched_priority_attr (param->sched_priority, policy);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
/* stacksize == 0 is fine. It means that we don't change the current
|
|
value. */
|
|
if (real_in->stacksize != 0)
|
|
{
|
|
ret = check_stacksize_attr (real_in->stacksize);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
/* Having a default stack address is wrong. */
|
|
if (real_in->flags & ATTR_FLAG_STACKADDR)
|
|
return EINVAL;
|
|
|
|
union pthread_attr_transparent temp;
|
|
ret = __pthread_attr_copy (&temp.external, in);
|
|
if (ret != 0)
|
|
return ret;
|
|
|
|
/* Now take the lock because we start accessing
|
|
__default_pthread_attr. */
|
|
lll_lock (__default_pthread_attr_lock, LLL_PRIVATE);
|
|
|
|
/* Preserve the previous stack size (see above). */
|
|
if (temp.internal.stacksize == 0)
|
|
temp.internal.stacksize = __default_pthread_attr.stacksize;
|
|
|
|
/* Destroy the old attribute structure because it will be
|
|
overwritten. */
|
|
__pthread_attr_destroy ((pthread_attr_t *) &__default_pthread_attr);
|
|
|
|
/* __default_pthread_attr takes ownership, so do not free
|
|
attrs.internal after this point. */
|
|
__default_pthread_attr = temp.internal;
|
|
|
|
lll_unlock (__default_pthread_attr_lock, LLL_PRIVATE);
|
|
return ret;
|
|
}
|